The MTD 68304072BS Pulley-Flat Idler is an essential OEM replacement part designed for various MTD, Cub Cadet, and Troy-Bilt lawn mowers and outdoor power equipment. This flat idler pulley maintains proper tension and alignment of drive belts, contributing to the efficient operation of your machinery. Constructed to MTD's specifications, it features an outer diameter of 114.3 mm (4.5 inches), an inner diameter of 9.525 mm (0.375 inches), and a height of 28.575 mm (1.125 inches). This genuine MTD part ensures durability and precise fitment for optimal performance.